f2fs crypto: zero next free dnode block
Now page cache of meta inode is used by garbage collection for encrypted page,
it may contain random data, so we should zero it before issuing discard.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index e0821d2..7254c11 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -519,7 +519,7 @@
if (err) {
struct page *page = grab_meta_page(sbi, blkaddr);
- /* zero-filled page */
+ memset(page_address(page), 0, F2FS_BLKSIZE);
set_page_dirty(page);
f2fs_put_page(page, 1);
}